String of explosions in Baghdad kill 15, injure more than 30

Volunteers, who have joined the Iraqi army to fight against predominantly Sunni militants from the radical Islamic State of Iraq and the Levant (ISIL), gather as they wait in Baghdad June 15, 2014. REUTERS/Ahmed SaadA boy, who fled from the violence in Mosul, stands near tents in a camp for internally displaced people on the outskirts of Arbil in Iraq's Kurdistan region June 14, 2014. REUTERS/Jacob RussellMembers of the Kurdish security forces stand guard as people, who fled from the violence in Mosul, arrive in their vehicles at a camp for internally displaced people on the outskirts of Arbil in Iraq's Kurdistan region June 14, 2014. REUTERS/Jacob RussellAn Iraqi security forces member with his weapon takes position as people, who fled from the violence in Mosul, arrive in their vehicles at a camp for internally displaced people on the outskirts of Arbil in Iraq's Kurdistan region June 14, 2014. REUTERS/Jacob RussellA view of signs and road of Sulaiman Pek, north of Baghdad June 13, 2014. REUTERS/StringerVolunteers, who have joined the Iraqi army to fight against predominantly Sunni militants from the radical Islamic State of Iraq and the Levant (ISIL), sit as they wait together in Baghdad June 15, 2014. REUTERS/Ahmed SaadVolunteers, who have joined the Iraqi army to fight against predominantly Sunni militants from the radical Islamic State of Iraq and the Levant (ISIL), pose for a photo in Baghdad June 15, 2014. TREUTERS/Ahmed SaadThe wreckage of a destroyed Iraqi security forces vehicle lies on a road of Sulaiman Pek, north of Baghdad June 13, 2014. REUTERS/StringerA woman volunteer, who joined the Iraqi army to fight against predominantly Sunni militants from the radical Islamic State of Iraq and the Levant (ISIL), flashes a 'V' sign in Baghdad June 15, 2014. REUTERS/Ahmed SaadVolunteers, who have joined the Iraqi army to fight against predominantly Sunni militants from the radical Islamic State of Iraq and the Levant (ISIL), chant slogans in Baghdad June 15, 2014. REUTERS/Ahmed SaadVolunteers, who have joined the Iraqi army to fight against predominantly Sunni militants from the radical Islamic State of Iraq and the Levant (ISIL), pray in Baghdad June 15, 2014. REUTERS/Ahmed SaadMembers of the Kurdish security forces take position during clashes with Sunni militant group Islamic State of Iraq and the Levant (ISIL) on the outskirts of Diyala June 14, 2014. REUTERS/Yahya AhmadA Kurdish security forces convoy travels during clashes with Sunni militant group Islamic State of Iraq and the Levant (ISIL) on the outskirts of Diyala June 14, 2014. REUTERS/ Yahya AhmadShiite tribal fighters raise their weapons and chant slogans against the al-Qaida-inspired Islamic State of Iraq and the Levant (ISIL) in Basra, Iraq's second-largest city, 340 miles (550 kilometers) southeast of Baghdad, Iraq, Sunday, June 15, 2014. (AP Photo/ Nabil Al-Jurani)

A string of explosions in Baghdad has killed at least 15 people and wounded more than 30.